High frequency module and high frequency component

a technology of high frequency modules and components, applied in the direction of substation equipment, electrical equipment, telephone set construction, etc., can solve the problems of long supply period, complicated component management, unchanging, etc., and achieve the effect of reducing the number of components, reducing the supply period, and reducing the supply cost of high frequency modules

Active Publication Date: 2014-11-27
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]According to various preferred embodiments of the present invention, use / no-use of the second circuit portion may be determined in response to a change in wiring at the demand side. This makes it possible to perform different functions at the port connected to the first circuit portion of the switching device in a case where the second circuit portion is used and a case where the second circuit portion is not used. Accordingly, single high frequency module is allowed to comply with a plurality of specifications of cellular phone without increasing the number of ports in the switching device, making it possible to cut the supply period and reduce the supply cost of high frequency modules by mass production. Further, the use of this high frequency module makes it possible to reduce the number of components to be managed at the demand side, thus making it possible to avoid complications in the component management.

Problems solved by technology

Further, a conventional high frequency module is configured to comply with one specification of cellular phone, and not comply with a plurality of specifications of cellular phone.
This prevents development of a common high frequency module for use in a plurality of specifications of cellular phone, leading to unchanging higher supply costs and longer supply periods.
This complicates the management of components as the number of components to be managed increases.
This leads to a higher cost for the switching device and makes it more difficult to justify a cost-cutting effect from using the common high frequency module.

Method used

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  • High frequency module and high frequency component
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  • High frequency module and high frequency component

Examples

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first preferred embodiment

[0029]Hereinafter, a high frequency component and a high frequency module according to the first preferred embodiment of the present invention are described.

[0030]The high frequency module according to the present preferred embodiment preferably is configured to comply with a first specification and a second specification of cellular phone. The first specification of cellular phone preferably corresponds to standards of Global System for Mobile Communications (GSM: Registered trademark) and standards of Time Division Synchronous Code Division Multiple Access (TDSCDMA). The second specification of cellular phone preferably corresponds to the standards of GSM (Registered trademark) and standards of Wideband Code Division Multiple Access (WCDMA).

[0031]Note that, in this example, the standards of GSM (Registered trademark) are common in the first specification and the second specification of cellular phone, but they differ in the WCDMA standards and the TDSCDMA standards. However, the c...

second preferred embodiment

[0069]Next, a high frequency module according to a second preferred embodiment of the present invention is described.

[0070]The high frequency module according to the present preferred embodiment is capable of complying with a third specification and a fourth specification of cellular phone. The third specification of cellular phone corresponds to the GSM (Registered trademark) standards, standards of the first band class of WCDMA, and standards of the second band class of WCDMA. The fourth specification of cellular phone corresponds to the GSM (Registered trademark) standards, the standards of the first band class of WCDMA, and standards of the third band class of WCDMA.

[0071]Note that, in this example, the GSM (Registered trademark) standards are common in the third specification and the fourth specification of cellular phone, but they differ in the standards of the second band class of WCDMA and the standards of the third band class of WCDMA. However, the common standards are not ...

third preferred embodiment

[0092]Next, a high frequency module according to the third preferred embodiment of the present invention is described.

[0093]The high frequency module according to the present preferred embodiment is capable of complying with a fifth specification and a sixth specification of cellular phone. The fifth specification of cellular phone is a specification focused on ESD protection from an antenna where the antenna is connected to a switching device via an ESD protection circuit. The sixth specification of cellular phone is a specification focused on an antenna gain where an antenna port is connected directly to the switching device without having the ESD protection circuit between them, thus preventing loss due to the ESD protection circuit from happening.

[0094]Now, a circuit configuration of a high frequency module 51 according to the third preferred embodiment is described. FIG. 7 is a block diagram illustrating the circuit configuration of the high frequency module 51. Note that detai...

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Abstract

A high frequency module is configured to be compatible with a cellular phone with a plurality of specifications without increasing the number of ports in a switching device. The high frequency module includes a switching device and a module board. The switching device includes a common port and connection switch ports. The module board includes external connection ports and a third filter circuit. An external connection port is connected to one of the connection switch ports of the switching device via a transmission line inside the module board. The third filter circuit is connected to a second external connection port and a third external connection port independently from the device connection ports of the switching device.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to high frequency modules through which high frequency signals complying with a plurality of communication systems or band classes pass and high frequency components constructed by mounting high frequency modules on module mount boards.[0003]2. Description of the Related Art[0004]In recent years, cellular phones with specifications complying with a plurality of communication systems or band classes (see Japanese Unexamined Patent Application Publication No. 2003-152588, for example) are becoming more common. Thus, high frequency modules installed in these cellular phones are configured to include a switching device and a plurality of filter circuits. The switching device is configured to include a plurality of connection switch ports that switch between connection destinations of antenna. The plurality of filter circuits is connected to the respective connection switch ports. Each filter ci...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04M1/02
CPCH04M1/0277H04B1/006H04B1/0458H04B1/18H04B1/48
Inventor UEJIMA, TAKANORIYAMAMOTO, MUNEYOSHI
Owner MURATA MFG CO LTD
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